Franklin, Tenn. — October 7, 2026

Williamson County's housing market has shifted from scarce to balanced over the past four months, according to preliminary September figures from Realtracs, the Middle Tennessee multiple listing service, compiled in an Oct. 5 market report by Nashville broker Grant Hammond of Compass RE.

The county carried 5.33 months of supply in September, up from 4.01 months in June. Months of supply estimates how long it would take to sell every active listing at the current sales pace. Readings below four months generally favor sellers, four to six months is considered balanced, and readings above six favor buyers. In June, Williamson was the second-tightest large county in the region, behind only Rutherford.

Prices in the county have eased along with the pace of sales. The Williamson median sale price fell to $950,000 in September from $999,000 in June, the report said, while the county's average sale price was $1,294,033 across 397 closings. Homes that sold in September spent an average of 41 days on the market.

The shift extends across the 10-county region. Months of supply for the region rose to 5.41 in September from 4.87 a year earlier and 4.80 in June. Active inventory averaged 14,249 homes, up 8% from September 2025, while new contracts fell 3% to 2,927. The average time from listing to contract lengthened to 63 days from 57 a year earlier.

Davidson County remained the loosest large market at 6.46 months of supply, past the six-month line generally associated with a buyer's market. Montgomery and Dickson counties followed at 5.83 and 5.81 months. Rutherford County, which had 3.96 months of supply in June, rose to 4.91.

Not every county loosened. Wilson County tightened to 4.22 months in September from 4.70 in August, making it the tightest market in the region, followed by Sumner at 4.32 months and Robertson at 4.58. Wilson's median sale price was $499,900 and Sumner's was $446,000.

Hammond attributed the regional slowdown largely to financing costs, noting that new contracts grew year over year every month from March through June before turning flat or negative after midyear as mortgage rates climbed. He also noted that inventory has leveled off mainly because fewer owners are listing; new listings across the region fell 19% from a year earlier in September.

The September numbers are preliminary. Hammond's report noted that first-of-month Realtracs pulls have tended to undercount closings and new listings and overcount new contracts, and that active inventory figures, as a point-in-time snapshot, are the least likely to be revised. He said he expects to publish settled September figures on Oct. 9.

For buyers comparing Middle Tennessee counties, the county-level gap is the more useful signal than the regional average. A buyer in Franklin or Brentwood is now shopping a market with more choice and more time to negotiate than at the start of the summer, while competition in Wilson and Sumner counties remains closer to what the region experienced earlier in the year.

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